TWI289437B - Optometry apparatus, optometry method, optometry server and computer readable recording medium - Google Patents

Abstract

The present invention provides an optometry apparatus and an optometry method wherein optometry can be easily conducted on a computer display without using a special equipment and can be applied to a test subject who has astigmatic vision. The invention comprises the steps of acquiring an attribute of a test subject, displaying an astigmatic test chart on a computer display, acquiring a direction selected by the test subject, displaying vision measurement charts with respect to the selected direction and to a direction perpendicular thereto, acquiring a limit of visual perception selected by the test subject, calculating a distance of apocenter from the acquired limit of visual perception and the acquired attribute of the test subject, and calculating a level of correction from the acquired direction and the two calculated distances of apocenter. A neural network, which is subject to learning with a number of test subject beforehand, is utilized for the operation of distance of apocenter. The astigmatic test chart includes groups of lines in four directions each consisting of a plurality of parallel lines, and the vision measurement chart includes a plurality of linear dark and light images whose sizes are altered, thereby reduces incorrect presentation of level of correction.

Description

1289437 玖, description of the invention (the description of the invention should be stated: the technical field, prior art, content, embodiment and schematic description of the invention) I: Technical field of the invention of the invention 3 Field of the invention The invention relates to the determination of vision The server device for measuring the device, the visual acuity measurement method, and the visual acuity 5, in particular, the invention relates to a vision measuring device, a visual acuity measuring method, and a visual acuity measuring server device that use the computer to perform the visual acuity detection by the user. I: Prior Art 3 Background of the Invention 10 The original visual acuity test was performed in a hospital or an optical shop, and the subjective or conscious vision measurement was performed according to the instructor's instructions. His method of examination refers to the use of a special vision tester to determine the refractive index of the eyeball. Then, according to the actual lens used to verify and determine the method of vision. The self-conscious inspection method refers to the use of the C-type annular visual acuity checklist as shown in Fig. 19, the examiner's finger 15 sets the corresponding symbol, allows the subject to answer, and determines the visual acuity of the test subject based on the result of the answer. method. In recent years, with the popularity of computers in the general family, consumers do not need to go directly to the hospital or optical shop for vision measurement. It is possible to use a computer to measure vision at home and to purchase glasses and contact lenses on the Internet. However, since the consumer's family does not have a special vision measuring machine, the home's vision is measured. It is impossible to measure his vision. As shown in Figure 19, this method of vision measurement uses the Internet to transmit the data of the visual acuity checklist to the computer screen of the consumer. The consumer only needs 6 1289437 玖, the invention description should be judged according to the picture. The smallest goal to reach. However, this method of vision measurement has encountered the following problems. Because the same-picture needs to represent multiple targets of different sizes, the small-point target needs to be continuously expressed, and it is not easy to judge how many targets can be seen by the detected person to the bottom. Therefore, the picture selected by the subject may not be the smallest face that he can see, resulting in measurement errors. Moreover, it is not sufficient to perform visual acuity examination on the subject of the astigmatism. Even in the measurement of astigmatism, the following problems exist. As shown in Fig. 20, the computer displays the astigmatism axis judgment table, and allows the subject to input the direction of 10 easy to see, but the astigmatism axis changes with the distance between the subject and the computer, simply letting the quilt The examiner inputs the easy-to-see direction into the face and does not correctly judge the astigmatism axis. When the visual acuity is measured by the examiner, even if the subject selects the wrong target, the examiner can find an error based on the respondent's answer; if the examiner 15 does not exist, the target selected by the examinee is incorrect. It is impossible for the three to know. However, the invention successfully solves the above problems. Its main purpose is to provide a device that does not require special equipment, and that uses a computer to face and quickly and easily perform vision measurement for a patient with astigmatism and Square 2 method. [Pour the inner solution 1] Summary of the invention Patent application scope! The invention relates to a vision measuring device that performs visual acuity examination using a computer screen, and the visual acuity measuring device has a basic attribute data (age, sex, height, etc.) of the subject to be examined. a subject-acquisition acquiring unit; 2. an astigmatism axis determining table display mechanism for displaying an astigmatism axis determination table on the screen; and an orientation selecting mechanism for taking the position selected by the detector by the astigmatism axis determination table displayed; 4. In the 昼 · ' ' 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视a first limit visual target acquisition mechanism for the extreme optotype; a second visual force measurement table display mechanism for displaying the visual acuity measurement table of the azimuth orthogonal to the acquired azimuth; and a second visual force measurement for display a second limit visual target obtaining means for obtaining a limit visual target selected by the one of the detected ones; 8. the first extreme visual target to be taken and the obtained second extreme visual target and the obtained detected subject Sexuality, as a parameter, the far-distance distance calculation mechanism for calculating the distance between the far-distance point and the second far point; 9. Calculating the degree from the obtained azimuth and the distance between the calculated far-distance and the second far-distance Degree calculation agency. According to the above method, the number of different vision powers is the feature of the vision measuring device, which does not require special equipment, can be realized by using a computer, and can be used for checking astigmatism. Further, with this vision measuring device, it is not necessary to directly perform the actual far point distance measurement, and it is only necessary to operate according to the kneading surface to know the far point 20 distance. It is also worth mentioning that the device is used to measure the most appropriate degree for the subject according to the basic data (age, sex, height, etc.) of the subject obtained in advance and the desired conditions of use of the glasses. The subject is convenient for the subject to purchase the glasses directly on the Internet based on the measured results. The invention relates to a vision measuring device according to the first aspect of the invention, wherein the first visual force measuring force display means and the second visual acuity measuring means display means are capable of A majority of the visual acuity checklists composed of the optotypes having a phase difference of 2 or more in size (the target image used for detection) are sequentially displayed on the display mechanism of the kneading surface display mechanism; the first limit visual target obtaining mechanism and the first The limit visual target obtaining mechanism has a selection mechanism for selecting the visual inspection table displayed by the kneading surface display mechanism to select the minimum visual target, and determining each visual inspection table from the selected visual minimum visual target The decision body of the minimum visual target that the subject can recognize. Because the size of each optotype in the above-mentioned visual acuity checklist is more than two stages, and each eye chart is displayed in turn, the subject is very likely to select the smallest image that can be seen clearly. Since the extreme visual image of the subject can be determined based on the smallest image selected by the subject, the visual acuity of the subject can be accurately determined. The invention of claim 3 of the scope of patent application is as claimed in item 2 of the scope of patent application. The visual/receiving device that has been carried out, the towel, the majority of the visual acuity checklist is sequentially displayed in the display mechanism of the faceless display mechanism, and the system will be included in the visual inspection table. The three eyesight checklists for 3 are displayed on the screen display mechanism. Because each eye chart has 3 stages, it is easier for the subject to select the smallest image that can be seen clearly, and the screen will display three eye charts in turn. The subject can perform the operation of selecting the minimum image three times, even if the result of the selection of three times is not the same. The majority of the theory is determined according to the majority, and the smallest image that can be seen by the subject can be accurately determined. Therefore, the visual acuity of the subject is accurately determined by the invention of the invention. The invention of claim 4 is the optometry apparatus of the third aspect of the patent application, the _, from the respective vision checklists The minimum visual target of the selected visible edge determines the minimum visual target of the detected subject. The mechanism 5 has the visual inspection table displayed by the visual display mechanism, and selects the minimum visual target to be visually recognized. When the minimum value of the phase difference of the selected optotype is 1, it is determined that in the combined visual target of the large and small phase difference, the minimum visual target is used as the determining mechanism of the minimum visual target recognized by the detected subject. The difference between the selected minimum target size is "solid phase, indicating that the reliability of the selected result is very high, so the smallest visual target in the checklist with the slave order difference of 1 is taken as the subject. The smallest target that can be seen' makes the results of the measurement more accurate. The invention of claim 5 is the vision measuring device according to the second or third aspect of the patent application, wherein the visual acuity chart determines the subject from the minimum visual target of the visual soul selected by the Ϊ 5 k The determining means for visually recognizing the minimum optotype has a minimum value of 2 when the phase difference of the optotype selected by the selection means for selecting the visually recognized minimum visual target for each visual inspection table displayed on the kneading display means is 2, In the combined optotype with a phase difference of 2, the optotype between the optotypes of the smallest combination is used as the deciding mechanism of the 20 minimum optotypes that the subject can visually recognize. Because when the difference between the size of the smallest optotype selected by the subject is 2 h slaves, the result of the selection of the child has a certain degree of credibility, and the minimum optotype that the examinee sees is in each The possibility that the visual standard has a phase difference of 2 is relatively high, so the smallest visual field in the checklist with a phase difference of 2 is the minimum visual target that can be seen by the examinee. The result of the measurement has an accuracy that does not prevent the subject from being used. The invention of claim 6 is the optometry device of the second or the third of the patent application scope, wherein the visual acuity checklist is determined by the minimum visual target of the subject The minimum visible target (4) of the visual discriminator can be visually recognized by the examiner, and the maximum value of the optotype selected by the selection mechanism of the minimum visual target selected for each visual inspection table displayed on the kneading display mechanism is 3, The majority of the eye chart can be displayed again on the screen to indicate the selection mechanism that selects the smallest target. 1〇# When the difference between the size of the smallest target and the size of the target is 3 or more, the reliability of the selected result is very low, so the subject is re-selected to prevent the subject from being detected. Operational errors ensure the accuracy of the measurement results. The invention of claim 7 is the vision measuring device described in claim 1, 2, 15, 5 or 6, wherein the far-distance distance/before-independent mechanism has a use for most of the subjects to be tested. The function of calculating the far-distance distance by learning the attribute of the subject and the learning mode in which the relationship between the limit and the distance of the retreat is determined. ^ By accumulating previously input data and calculation results and using them as parameters, we can calculate accurate distances for a wide variety of people. As a specimen of learning, it is possible to use a neural network (Nwral's method can also use artificial inferences and other methods. The invention of Shenyue patent scope 8 is as patent application No. 1, 2 1289437, invention The visual acuity measuring device according to the item 4, 5, 6 or 7 further includes a near-point distance measuring table display means for displaying a near-point distance measuring table on the screen, and a near-point distance measuring table for displaying the detected subject The near-point distance acquisition mechanism of the input near-point distance. 5 Through this method, the distance vision and the presbyopia can be determined. Moreover, the obtained near-point distance can also be used as a parameter for calculating the far-distance distance, because The far-distance distance calculated by the method takes into account the adjustment force of the eyeball of the subject, so that a more accurate degree can be determined. 10 The invention of the ninth application patent scope is the patent scope 丨, 2, 3 The vision measuring device according to the item 4, 5, 6, 7, or 8, wherein the astigmatism axis determination table has no mechanism and has a linear group of four directions formed by a plurality of parallel lines. Function. With this method, the wave of 15 between the parallel lines seen by the astigmatism will show a difference, and since only 4 directions are displayed, the subject cannot perform other (outside 4 directions). Judgment, thereby reducing the error of the judgment, so that the inspection result has a high degree of credibility. The invention of the scope of claim 1 is as follows: Patent Application Nos. 1, 2, 3, 4, 5, ό, 7, 8 In the visual acuity measuring device according to the item 9, the at least one of the first visual acuity indicator display means and the second visual acuity measuring means display means has a function of displaying a plurality of linear shading images of the changed line width. This method of measuring the amplitude between the parallel lines makes it easier to measure the limit visual target of the subject than the measurement method using the c-type %. Especially when the subject with good visual acuity is examined, the screen is displayed. Like the change 12 1289437 玖, the invention description is very small, plus the line's shading, etc. because of the limit of the subject's visual target. '...more accurate determination of the patent application scope of the 11th invention system The optometry measuring device according to the second aspect of the invention, wherein the astigmatism axis chart display mechanism and the first vision (four) table display mechanism and the second The optometry meter shows that one or one thousand of the institutions have the screen display information of the computer screen.

The display size change mechanism that changes the display size of the computer after the information is displayed. 10 0 is a picture indicating the size and resolution of the screen display image, and the size of the astigmatism axis determination table and the optometry table which can be adjusted can be adjusted. Therefore, through this item, the computer screen can automatically set the size of the eye chart, which is conducive to the smooth progress of vision measurement.

Because the field of view changes with the type of computer screen (such as CRT, liquid crystal), in order to allow the subject to have a good view when testing, the written will change the size or change of the size of the face to the subject. The distance of the screen and other indications. According to this item, the information of the computer screen obtained in advance is obtained. For the type of computer used by the subject, an indication such as the above may be issued to the subject. Ί0 The information obtained can be obtained by the testee or automatically obtained by the computer. The invention of claim 12 is the optometry apparatus described in the claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11 wherein the astigmatism axis determination table is displayed. The mechanism and the first visual acuity measurement table display 13 1289437 玖, at least one of the invention description means and the second optometric force measurement table display means, and p 々 ' has a display color selection means for selecting a color to be displayed on the computer screen. According to this item, the color of the indicated eye chart can be freely selected. For example, first, the prepared color is displayed on the screen, and the subject is selected from the middle 5 to select the easiest to see, so that the visual acuity detection is facilitated. Since the field of view of the subject changes depending on the face of the computer (CRT face, liquid crystal face), the subject can use other colors. The invention of claim 13 is the vision measuring device described in the Patent Application No. 1, 2 1 〇 ^, ^, ^, ^, ^, wherein the astigmatism axis determination table display mechanism and the third vision At least one of the measurement table display means and the second visual acuity indicator display means has a display brightness selection means for selecting the brightness displayed on the computer screen. According to this item, you can freely choose the brightness of the face. For example, first, the prepared brightness sample is displayed on the 15th surface, and the subject is selected from the most easy-to-see one. This is convenient for visual acuity detection. Because the subject's field of view changes depending on the computer screen (CRT face, LCD face), the subject can change the brightness of the face at any time. 20 + The invention system of the 14th patent range - a method for measuring the visual acuity for visual inspection using a computerized face, which has a basic attribute data (age, sex, height, etc.) The subject attribute acquisition step; 2. The astigmatism axis determination table display step of displaying the astigmatism axis determination table on the screen; 3. The astigmatism axis determination table displayed on the screen 2 14 1289437 玖, the invention description is selected by the tester The azimuth selection step of the azimuth; the first visual acuity measurement step of the visual acuity measurement table in the azimuth read on the crotch surface; 5. The selected visual acuity measurement table is used to obtain the selected subject The limit of the 'the first! Step 2: Obtaining a second visual acuity measurement step of the visual acuity measurement table of the orientation of the orthodontic position on the pupil surface; 7. Obtaining the second visual acuity measurement table displayed a second limit optotype obtaining step of the limit optotype selected by the subject; 8. the obtained first limit optotype and the obtained second limit optotype and the acquired subject attribute as parameters Calculating the distance from the far point of the distance between the second point and the far distance of the distance from the second point to the calculation step; 9. Calculating the degree of calculation of the degree from the obtained azimuth and the calculated distance between the far distance and the second far point. According to the above method, the visual power is calculated, no special equipment is needed, it can be realized by using a computer, and it can be used to check the astigmatism. and. This vision measuring device is utilized. It is not necessary to directly measure the far distance of the actual 15 and measure the degree by simply operating according to the face. The invention of claim 15 is the method for measuring vision as described in claim 14 of the patent application, wherein, The visual force measurement table display step and the second visual acuity measurement table display step, and the plurality of 20 visual force inspection tables each having an optotype combination having a step difference of 2 or more in size of the target (the target image used for detection) are sequentially The display step displayed on the facet display means; the first limit target acquisition step and the second limit target acquisition step, and the selection of the visual inspection table displayed by the screen display means to select the visible minimum view The step of determining a minimum visual target that is visually recognized by the subject for each visual acuity checklist from the selected minimum visual target. 15 1289437 发明, invention description Because the visual acuity checklist mentioned above has a size difference of more than two stages, and each eye chart is displayed in turn, it is easy The smallest image. Since the minimum visual image selected by the subject can be determined, the subject's extreme visual target can be determined to accurately measure the visual acuity of the subject. The invention of claim 16 is a vision measuring device that displays a visual acuity checklist for a plurality of visual indicators that change in size in accordance with visual acuity, and displays the visual acuity checklist displayed on the screen display means from the visual acuity checklist displayed on the screen display means. The subject selects the minimum visual target that is visually recognized and self-consciously measures 10 visual acuity. The visual acuity measuring device has a plurality of visual acuity examination tables each having an optotype combination having a phase difference of 2 or more. An eyesight inspection table display mechanism displayed on the facet display means; and an individually viewable target acquisition means for obtaining the visually recognized visual target selected by the examiner for each visual acuity checker displayed by the visual acuity checklist; and The visual disc determining means for determining the minimum visual target that can be visually recognized by the examinee from each of the individually viewable visual discs that can be obtained by the visual discriminator. The invention of claim 17 is a vision measuring server that provides a vision checklist for a plurality of optotypes including a corresponding visual field and a size change step by step to a customer terminal connected to the network, and draws a picture from the customer terminal. The visual acuity checklist displayed by the 20-face display mechanism allows the subject to self-consciously measure the visual acuity by selecting the visual target that is visually recognized. The visual acuity measuring server has a visual difference of 2 or more for the size of the optotype. The majority of the visual acuity checklists formed by the standard combination are sequentially displayed on the face display mechanism of the customer terminal, and the visual acuity chart image data providing means for providing the visual acuity chart image data 16 1289437 发明, the invention description; the customer terminal screen display mechanism Each of the displayed visual acuity checklists obtains an individually viewable visual target obtaining means of the visually recognized minimum visual target selected by the examinee; and each individually viewable visual target obtained from the individually viewable visual target obtaining means And the visual disc marking mechanism that determines the minimum visual target that can be visually recognized by the examinee. Since the size of each of the visual indicators in the above-mentioned visual inspection table is more than two stages, and each visual acuity chart is displayed in order, it is easy for the subject to select the smallest image that can be seen clearly. Since the minimum visual image selected by the subject can be determined based on the minimum image selected by the subject, the subject's visual acuity can be accurately determined. The invention of claim 18 is a method for measuring vision, which is a visual inspection table in which a plurality of visual indicators of a visual change in size are displayed on a kneading surface display mechanism and displayed from a screen display mechanism. The subject selects the minimum visual target that is visually recognized and self-consciously measures 15 visual acuity. The visual acuity measuring method has a majority of visual acuity checklists that can be formed by a combination of optotypes having a phase difference of 2 or more. a step of displaying on the screen display means; selecting a visually-identified minimum visual target for each visual acuity checklist displayed by the screen display means; and determining that the visually-selectable minimum visual target selected by each visual acuity checklist is detected You can visually recognize the 20 steps of the minimum target. Because the visual acuity chart in the above is in two stages, the above and 'they' are displayed in turn, so the subject is very likely to select the smallest image that can be seen clearly. Since the limit image of the subject can be determined based on the smallest image selected by the subject, the invention is described in order to accurately measure the visual acuity of the subject. The main objects of the invention are described above, and other objects, features, and advantages will be described in more detail below with reference to the drawings and an embodiment of the invention as an example. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing the configuration of a vision measuring device system in a certain embodiment.

Figure 2 is a flow chart of the processing of the inspection device in a certain implementation state. Figure 3 is a side view of the personal data when you enter it. ΰ Fig. 4 Enter the side view of the glasses when using the conditions. Fig. 5 is a cross-sectional view showing the astigmatism axis. Fig. 6 is a plan view showing the astigmatism axis. Fig. 7 is a cross-sectional view showing the far point distance. Figure 8 is a cross-sectional view of the far point distance. 5 Fig. 9 is an explanatory screen diagram when measuring the near point distance.

Figure 10 is a cross-sectional view of the near point distance. Fig. 11 is a diagram showing the composition of a neural network based on the far distance. Figure 12 is an illustration of a portion of a vision measuring device system in an additional embodiment. 0 Fig. 13 Schematic diagram of the visual inspection table for a complex number (small size). Figure 14 is a schematic diagram of a plurality of visual inspection tables (slightly larger size). Fig. 15 is a schematic diagram of a plurality of visual inspection tables (a larger size). Fig. 16 is a flow chart showing the operation of the vision measuring device in the embodiment. Figure 17 is a schematic diagram of the method and process for determining vision. 18 1289437 玖, invention description Figure 18 The target symbol that can be used in the vision measurement of the invention. Figure 19 is a schematic view of a C-type ring chart. Figure 20 astigmatism axis visual acuity chart. I: Embodiment 3 5 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Fig. 1 is a view showing the configuration of a vision measuring apparatus system in a certain embodiment. As shown in the figure, the system is connected to the (visual measurement server 10) through (Internet 1) (computer 1) used by the subject. (Vision measuring server 10) provides (10) the power measurement service (the computer 1) to the (computer 1) (the network information server 20 (WWWserver), (the face display database 30) The user interface device 40) (visual measurement data database 50) (distance distance calculation device 60) and (degree calculation device 70). When the user accesses the Internet through (computer 1), (Global Information Network Server 15 20 According to the program of the invention, it provides a vision measurement service. In order to enable (computer 1) to accept this service through a widely used web browser (Webbrowser), it is equipped with a HTTp server (server). The device (screen display database 30) is used to store the face data provided by (World Wide Web Serving 20 20) to (Computer 1). The first appearance of the introduction, allowing the testee to enter the individual The face of the situation (age, gender, height, etc.), the screen for measuring the astigmatism axis, the face for measuring the distance between the far points, and the face for measuring the distance of the near point are saved in the form of HTML. (User interface k is set to 40) Responsible for indication Material database 19 1289437 玖, invention description memory of the person's data input by the tester; start (far distance distance calculation device 60) and (degree calculation device 7 〇) for far distance and degree calculation. (Global Information Network Servo 20) through CGI (C〇mm〇n Gateway

(Startup (user interface device 4)); and (user interface installation 5 set 40) to start, (far distance distance calculation device 00) and (degree calculation device 7 〇), and the subject The data of the person, the position data of the astigmatism axis (right eye and left eye), the measured limit range data (right eye and left eye & direction), and the measured near distance data (right eye and left eye & The direction of the distance, the distance of the calculation, the degree of calculation, etc. are stored in (visual measurement information 10 repository). Next, a method for measuring the vision of the present invention will be described with reference to Fig. 2 as an example. First, in order to obtain the condition of the subject, the face of the subject to be tested is displayed on the computer (S10), and after the acquisition, the data of the subject to be tested is stored (S12). The conditions of the person to be tested include: age, sex, height, etc., and the conditions of use of glasses and contact lenses. Figure 3 shows the screen when entering personal data. Figure 4 shows the face when the glasses are used. This long reading, "desktop work means close-up use, and "computer" means medium distance use, "drive" Indicates long distance use. 2 0 Next, in order to obtain the measurement direction of the astigmatism axis, the astigmatism axis determination table is displayed on the pupil surface (S14), and after acquiring the orientation selected by the subject, the data is stored (S16). Figure 5 is a description of the measurement of the astigmatism axis. As shown in the figure, the astigmatism axis judgment table is composed of a plurality of parallel lines having 45 degrees, 9 degrees, 135 degrees, and 18 degrees of 4 20 1289437 玖, and the linear group in the direction of the invention is described. When the astigmatism is viewed by the subject, the field of view will have a clear orientation and a blurred orientation. At this time, the screen will ask the subject to select a different orientation from the other fields of view. Because the direction of the astigmatism 5 is also likely to change depending on the distance of the object, the subject is required to click on a different orientation from the other fields of view. If the orientation of the first field of vision is used as the axis of astigmatism, there is a risk of deviation. Therefore, the invention is not eager to determine the axis of astigmatism here, but is determined after calculating the distance of the far point. 1〇 》 When the subject with astigmatism views the screen, in principle, the field of view on each side should be the same. At this time, the face will ask the subject to click the “See the same” button or the “Unclear” button. The subject is considered to have no astigmatism, and then, the squat in the horizontal direction will be performed. Next, the configuration of the astigmatism axis determination table will be described. 15 The background color of the astigmatism axis judgment table is green, the color of the line is black, the line width is 2 pixels, and the line width is 3 pixels. The reason why the background color is set to green is because if the background color is set to white, the brightness of the picture will be non-rolling, causing the pupil to shrink, and the difference in the field of view of the four areas of the subject being viewed will become Obviously, using green can reduce the irritation of light 2 〇 to the eye: the color of the line is set to black because black is most easily confirmed by the tester according to multiple vision tests; the line is set to 2 pixels because · If you want to be a pixel, especially when the computer screen is CRT ¥, the focus of the electronic grab will become late, which will cause the difference in the horizontal, vertical and side directions. Therefore, the line width needs at least 21 1289437 玖, invention description 2 pixel 'line width is set to 3 pixels because the astigmatism% is detected according to the computer screen. The distance from the eye to the eye chart in the picture is very close, and the axis of astigmatism is easy to change, causing the error judged by the subject. The 3 pixels is equivalent to the actual distance from the eye chart. It is true that the field of view (line-to-line gap) is set to the standard. The person whose visual acuity is the angle of view has the ability to recognize objects with a distance of 29.29mm from the imm'. This ability is almost equivalent to the i pixel using a 14-inch LCD screen or a 7-inch CTR screen, and so on, at 2 pixels. It is equivalent to 0.5 eyesight, because people who need glasses have poorer vision than normal people. 10 So increase the line spacing to 3 pixels. In addition, the astigmatism axis is divided into four directions because these four directions are very practical when preparing glasses, and because it is judged by the examinee himself, in order to make the operation as simple as possible and avoid errors, it is necessary to set four directions. . Next, after selecting the measurement direction of the astigmatism axis, in order to measure the visual acuity at the far point 15, the screen displays the visual acuity chart (si8) in the selected measurement direction, and after the measurement is completed, the measurement result is performed as the first limit visual target data. Save (S20). Fig. 7 is an explanatory picture for measuring far vision, and Fig. 8 is a side view for measuring far vision. As shown in the figure, each picture is composed of 3 black 2 lines and 2 white lines, for vision conditions. Differently, a plurality of 20 different visual targets (about 10 to 20 stages) are prepared, and the screen asks the examinee to select the smallest 3 black lines that can be cleared on the screen. For the detected object, This method is easier to judge than using a c-ring. In addition, before performing the measurement, the face will require the subject to maintain a long distance from the written arm. This is because the arm is at a certain ratio to the height. 22 1289437 发明, the invention indicates that the computer is based on the pre-tested person. Height can predict the distance between the subject and the picture. This eliminates the need to measure the actual distance between the subject and the screen, and does not require adjustment of the size of the screen to make the operation simple. 5 (4) 'In order to measure the far-point visual acuity perpendicular to the selected measurement azimuth, the pupil will display the vertical visual acuity chart (S22). After the measurement is completed, the measurement result is saved as the second limit visual target data (SM). ). Secondly, in order to measure the near-point distance in the selected azimuth, the pupil surface displays the near-point distance visual acuity chart in the selected measurement azimuth (S26), and after the measurement is completed, the measured result is used as the first near-point distance data. Save (S28) f 9 Figure τξ: 昼 疋 疋 疋 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , composition. According to the picture description, first, the subject needs to put the face as close as possible to the picture, and then gradually move away from the picture until it can see the three black lines on the 15 sides of the face, and measure the distance from the eye to the face. 'Enter the face in cm. Since the distance from the face is very close when this measurement is made, a black line that is thinner than the 刖δ mark is used. However, because people of different ages have different ability to distinguish images, a younger black line is used for young people and a thicker black line is used for 20 age groups. Similarly, in order to measure the near-point distance in the vertical direction from the selected measurement direction, the screen displays the near-point distance visual acuity chart (S3〇) in the vertical direction. After the measurement is completed, the measurement result is used as the second near-point distance data. Save (S32). 23 1289437 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明According to the second extreme visual target data, the second near-point distance data, and the extreme visual acuity data of the subject, the far-distance distance 5 is calculated as the second far-distance distance data (836). The far-distance distance calculation program uses a neural network to accumulate previous calculation results and perform learning functions. The schematic diagram of the structure of such a neural network is as shown in the figure. The input hierarchy includes: the far point vision of the segment (the limit optotype selected by the detector), and the near point distance of the phase (the root 10 is near) Point distance from the near point distance measured by the eye chart) and K stage data (age, gender, height); the output level includes the far distance of the ^^ stage. The reason why age and gender are used as parameters is because different ages, genders, and eyes have different adjustment powers. The reason why the height is used as a parameter is because the screen will require the subject to maintain a distance of 15 degrees from the screen, and the arm and height are at a certain ratio. The computer can calculate the height according to the height of the testee beforehand. The distance between the subject and the screen is predicted. Here, in order to easily convert the degree when calculating the degree, the parameters such as the near point distance and the far point distance are input in meters (meters), and are represented by the reciprocal d. 20 There is also a neural network that separates the selected astigmatism axis orientation and its perpendicular orientation into two independent learning specimens to perform independent calculations. Moreover, because of the different computer screens, the field of view of the screen is different. The neural network can learn differently and perform independent calculations on the LCD screen and CRT screen. 24 1289437 发明, Description of the invention From the determination of the aforementioned astigmatism axis to the calculation of the aforementioned far point distance. Both are for the left and right eyes. According to the obtained measurement orientation, the old point distance data and the second far point distance data calculation degree _). (s: spherical power, c · astigmatism, AX: astigmatism axis) 5 The first far point distance calculated by %4 is D1, the second return point distance calculated by AX1, S36 is D2, and the direction is AX2. When [丨di | <丨D2 |, S=D卜C=D2-D卜AX=AX1 When | D2 I < | D1 I, S=D2, C=D1-D2, AX=AX2 or more 'The calculation of the degree of the eye is explained. Next, it is necessary to determine the degree of the lens based on the calculated eye degree and the conditions of use in the data of the subject, and finally the glasses and contact lens on the network can be accepted. Ordering business. When determining the lens power, it is first necessary to determine the distance of use of the glasses based on the conditions of use of the glasses in the data of the subject, and then determine the degree of the lens. The distance used is divided into a short distance (30mcm), a medium distance (50, 60cm), and a distance (5m). For example, when the far point distance is D and the correction of 5m (-0.2D) is required, the degree of the lens is D1 + 0.2D. Further, the eyeball optical model can be set using the data of the subject, and the program for verifying the concentration of the naked eye can be set by using the optical model of the eyeball described above, and the validity of the calculated eye degree can be verified by the program, thereby more accurately Determine the degree of the lens. At the same time, by the above method, it is also possible to set and verify the program of the condensing property of the corrected eyeball, and the program can be used to check the determined degree of the lens 25 1289437 玖, the number of inventions. This allows the optimal lens to be selected for the subject. In addition, according to the condensed state when the lens is worn, the sharpness seen in a certain distance when the subject wears the spectacles can be calculated, and the sharpness can be used as a standard to be worn by the subject. When you are in glasses, you can see the simulated image of the real scene, and you can display this image on the computer screen. This way, the person being tested can use the computer to check the face after reading the glasses. degree. This makes it easy to select the lens that best suits the subject. The above description has been made on the method of calculating the far distance by using the neural network. The invention can not only calculate the far distance by using the neural network, but also can calculate by using the inference method, that is, using a large number of The data of the examiner, from which the law is found to be inferred and calculated. At the same time, a large number of near-point distances and personal data in the data of the subject can be used as parameters to find an approximate calculation formula for the relationship between distant vision and distant point. This formula is used to calculate the distance of the different return points. The above method is an effect that the invention can exert. In addition, when calculating the rebate distance, not only the near point distance can be calculated as a parameter, but also the parameter can be used directly because the age is close to the near point distance. 0 In the foregoing, the method of judging the astigmatism axis is described, that is, by letting the subject select a ray axis according to a linear group of four directions (composed of a plurality of parallel lines) displayed on the same screen of the computer, and selecting regions having different fields of view. According to the invention, the method can be used to display the astigmatism axis by the linear region of the four directions sequentially displayed on the pupil surface, and the subject can select a region having a different field of view. The choice of the limit optotype is also the same. That is, the subject can select the limit optotype by the different size of the optotype displayed by the same side, or can be displayed on the crotch by the optotypes of different sizes. Select 5 extreme optotypes. In addition, when different visual targets are displayed on the same side, the visual targets can be displayed multiple times, and the size of the displayed visuals is more than two stages at a time. Next, the constitution and processing flow of this vision measuring system will be described. 10 Fig. 12 is a view showing a part of the vision measuring system in the above-described implementation state. As shown in the figure, such a system is composed of (visual measurement server 1) (user computer 1) and (internet 2). (Vision measuring server 10) owns (Global Information Network Server 20) (having a function of providing a web page for the subject). 15 CG122 is connected to (Global Information Network Server 20). The CG 122 selects or changes the HTML material sent by the testee. Moreover, it has the function of obtaining individual visual recognition targets. Any information can be provided from the User Computer. The HTML document is included, and the information about the target is sent to the function (the visual acuity function unit 80) which will be described later. 20 (Global Information Network Server 20) instructs (data readout, memory area 32) to memorize (image data 34 of the eye chart). (The image data 34 of the eye chart is composed of plural numbers). (Image data 34 of the eye chart) The image data (HTML data 24) is appropriately sent to (user computer 1) and displayed by the display device (user computer 1). 27 1289437 发明, DESCRIPTION OF THE INVENTION The image data 34 of the visual acuity chart used in the present invention includes Figs. 13 (34a), 14 (34b), and 15 (34c). Since the measurement is performed using three images, the visual acuity of the subject can be accurately measured. When measuring far vision, (image data 34 of the eye chart) is used as the image of the image. It consists of 3 black lines and 2 white lines. For visual acuity, the size of the optotype changes in 21 stages. In addition, the background color of the optotype uses green 'because if white is used, the brightness of the picture will be very glaring, causing the pupil to shrink, resulting in a clearer result than the actual vision, resulting in measurement errors. So use green to reduce the light on the eyes. Moreover, it is easier for the subject to select the smallest three black lines that can be cleared on the screen than the c-type ring. (Image data 34 of the eye chart) are Fig. 13 (34a), Fig. 14 (34b), and Fig. 15 (34c). Each figure shows images of various sizes. In the image data 34a, 34b, 34c of the visual acuity checklist, images adjacent to each other with a size difference of 15 steps cannot exist in the image data of the same visual acuity checklist. Hereinafter, an example will be described. The number is marked below the optotype used, starting from 1 to 2!, and the size of the optotype increases as the number increases. The size of the optotype of the number N and the number of the optotype of the number are one step difference, which is an image adjacent to the size difference, and 20 cannot exist in the image data of the same visual acuity checklist. This is because • If the adjacent images of the size difference are placed in the image data of the same visual acuity checklist, it is easy for the subject to be confused when selecting, thereby affecting the smooth progress of the measurement. In this inspection, 34a, 34b, and 34c are used to check the image. In the image data 34a of the eye examination table, the visual targets of 1, 4, 7, 10, 13, 16, and 19 are arranged, and in the image data 34b of the visual acuity checklist, 2, 5, 8, 11, and 14 are arranged. In the image data of the 17 and 20, the image data 34c of the visual acuity checklist is arranged with the visual targets 5 of 3, 6, 9, 12, 15, 18, and 21. Thus, 'discriminating different visual targets' in the image data of the same visual acuity checklist makes the difference between the visual targets become very conspicuous, thereby facilitating the subject to select the visual target. In addition, 'depending on the type of computer screen (liquid crystal, CRT), size (14-inch, 17-inch, etc.), the surface resolution (horizontal 8〇〇>< vertical 6〇〇, horizontal 1〇26><long 768, etc.) The difference between the actual display of the image on the face is also different, however. Using the image data of the eye chart (3), images of the same size can be displayed on different screens, and the image data and image resolution will be memorized as different data. The CG 122 is connected to the (visual force measurement function unit 8) (having the function of determining the accessibility of the visual target), and the (visual acuity function unit 80) determines the data based on the information proposed by the CGI (the result of the optotype selected by the inspection). The smallest target that the examiner can see. Next, the operation mode of the (visual acuity function unit 8A) will be described. (User computer 1) A vision measuring terminal device that exchanges information with (visual force measurement server 1). (user computer 1) indicates the home of the subject

Information exchange of Xing (Vision Measurement Server 10). With a modem and Internet, the device will be used to complete the t-change. In addition, since it is necessary to display the image data of the eye chart (user's power 29 1289437 玖, invention description brain 1), it is preferable to use a computer with a good imaging quality. At the same time, '(user computer 1) is equipped with a browser (WwWbrowser). 'The detected person can enter the IP address or URL of the notification and enter the 5 URL input of the wbrowsN to enter the browser (Global Information Network Server 2) Depending on the display (image data 34 of the eye chart), the measurement of vision is performed. This will be described below with reference to Fig. 16. First, the subject enters a URL on the computer screen to complete the connection (user computer 1) and (visual measurement server 10) (S42). (Vision measurement 10 server 1) Sends the HTML data (the size of the screen of the screen used by the testee, the screen resolution, etc.) to the (Global Information Network Server 20) (User computer 0044). (The user's power is 1) and is displayed on the face. The subject uses the slide and keyboard to input the data into the displayed format and send it to (visual measurement). (S43). It will be forwarded to CG122 by (Global Information Network Server 2〇). The CG 122 encodes the corresponding (image data 34a of the visual acuity chart) into the (HTML data 24) and then sends # to (user computer 1) based on the data (the size of the screen). (S44). (User's computer 0 (344) is displayed on the screen (S45) after receiving the letter (the image data of the eye chart) (S45). Then, 20 the subject is kept at a certain distance from the face, according to (the chart of the eye chart) The measurement of the visual acuity is carried out like the bedding material 34a), and the number of the minimum visual target that can be seen is input to the face by the mouse or the keyboard (S46). The number input by the subject is sent as the result of the third measurement ( Vision test servo 10), through (Global Information Network Server 2), CG122, 30 1289437 玖, invention description (visual force measurement function unit 80) save (S47). Similarly, (visual force check chart Image data 34b) and (image data 34c of the eye chart) are also operated in the same procedure (S44-S47) (S48-S55) 〇5 (visual force measurement server 10). The measurement results performed by the second and third visual acuity charts are evaluated in (function unit 80), and if the result is reliable, the result is defined as the minimum view ($56) that can be seen by the subject. Figure 17 shows the steps of s 5 6 above. The energy unit 80) first compares the selected optotype (the result of selection according to the first, tenth, second, and third visual acuity tables) (whether the minimum absolute value of the visual disc size step difference is 1) (S561). : According to the first visual acuity chart, select the visual target as No. 4. According to the second visual acuity chart, select the visual target as No. 5. According to the third visual acuity chart, when the optotype is selected as No. 6, the size of the optotype is one-stage difference, so that it can be judged to be detected. Therefore, the visual acuity of the detected 15 persons is calculated based on the smallest visual target No. 4 (S562). When the above-mentioned visual target size is not a one-stage difference, the procedure of 1 § 563 is performed. Similarly, The functional unit 80) first compares the selected optotype (the result of selection based on the i-th, second, and third visual acuity charts) (whether the minimum absolute value of the visual target size step 20 is 2) (S561). : The minimum absolute value of the phase difference of the visual target size is selected when the optotype selected according to the second visual acuity chart is No. 4, the optotype selected according to the second visual acuity chart is No. 6, and the optotype selected according to the third visual acuity chart is π. It is 2, so that it can be judged that the subject is in the above three examinations. There is one misselection. Therefore, according to the smallest two visual labels (No. 4 and No. 6), 31 1289437 玖, the invention describes the flat sentence value p 5 visual target to calculate the visual acuity of the subject. At the same time, the subject can be re-operated. s "When the minimum value of the size difference is 3 or more, the minimum visual target that can be seen by the person inspected / can not be judged. For example, according to the visual acuity chart 5, the optotype is selected as No. 4, according to When the second visual acuity chart selects the visual target as No. 8, and the third visual acuity chart selects the visual target as No. 12, the minimum absolute value of the visual target size difference is three or more, and the remotely selected visual target has no continuity. From this, it can be judged that the subject did not make a correct choice in the above three examinations. Therefore, it is impossible to determine the judgment of the minimum visual target that can be seen by the subject. After the test, the test subject is returned to step S44 to perform the re-operation, or it can be handled as an operation failure. Further, when the minimum absolute value of the target size difference is two or less, and only one is present, the minimum visual target that can be seen by the subject can be judged. At the same time, it is also possible to increase the phase difference from 2 or less to 2 or more within the allowable accuracy range. At this time, the accuracy of the vision measurement increases as the phase difference decreases, and decreases as the phase difference increases. It is also possible to have the subject re-examine the inspection or handle it as an operational failure. For example, when there is only one group in which the minimum phase difference of the target size is two or less, and two or more cases are different. 20 In summary, in this implementation state. It is easy for the examinee to confirm the minimum visual target, and even in the case of mis-selection, the visual acuity measurement system makes an objective judgment as described above. In the above-mentioned visual inspection, an optotype consisting of three black lines and two white lines is used, and the vision measuring system can also use, for example, the 18th (8th) p) C-rings, various symbols, characters, etc. as shown in the figure. This vision measurement system in the continuous state can not only measure distant vision, but also measure near-point vision based on the image data of the displayed visual acuity chart. 5 However, in this vision measurement state, since the astigmatism axis is not directly measured, when the subject has strong astigmatism, it affects the measurement precision. Therefore, after the above-described measurement of the astigmatism axis is completed, it is most preferable to perform the detection by using the visual field in which the direction of the line coincides with the direction of the astigmatism axis. Although the measurement of 10 or more is used, the three visual acuity charts 34a, 34b, and 34c are used. However, it is also preferable to use two or more visual acuity charts and determine how many visual acuity charts to use depending on the number of visual targets. The method of measuring vision is to display the minimum visual target that can be seen by the subject by displaying a plurality of visual acuity charts on the screen. At the same time, the subject can also be selected by changing the phase difference of the optotype. It is also an ideal measurement method to use an eye chart with a large difference in stages. The vision measuring system can not only memorize the image data of various visual acuity charts, but also memorize various visual image data, and generate an appropriate visual acuity chart image based on the organic combination of these data. Moreover, the size of each of the 20 visual targets can also be changed as needed. This method of vision measurement can not only display the visual acuity chart on the pupil surface, but also allow the subject to select the minimum visual target that can be seen. The following methods can also be used. For example, 1 shows that two stages of the difference between the two stages are selected by the subject. (2) Displaying two optotypes (two small-stage optotypes and two large-stage optotypes) with two or more discrepancies between the visual target selected by the subject, 33 1289437 玖, and the invention. Choose. The vision measurement system can not only use the (Global Information Network Server 20) to complete the transmission and reception process of the visual acuity data and the selection result data, but also the method of installing the application software for the vision measurement on the vision measurement server. To complete this process. In this implementation state, the vision measurement table and the near-point distance measurement table image can be displayed not only in the direction perpendicular to the direction selected when measuring the astigmatism axis, but also in the face display database 3 事先 in advance. Figure 10 of the direction, when needed. Then select and display from it. The images in other orientations can be reproduced by the image creation software by previously recording the images in a specific orientation. Thus, the method of forming an image by the image forming software increases the display load of the ghost image, but since the image can be made in any direction, the orientation of the astigmatism axis can be more than 15 degrees. Similarly, when performing far-point vision measurement, in order to indicate that the line width is different, the view is transmitted through the memory of the characteristic line image in advance, and then the image creation software is used to enlarge or reduce the image, and then, through, (4) The software is produced. 20 inventions.改变In order to obtain the display of the screen by the computer of the (four) and the data as the standard

The screen display size of the ( 四 四 四 四 四 四 四 四 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视 视However, in order to calculate the exact degree, the setting data is small. 34 1289437 被, invention description of the tester The setting information of the computer screen includes: the type of the screen, the resolution of the computer, and so on. These attribute data about the computer can be obtained automatically or through the input of the testee. This situation is also the same as that described above. It can be enlarged or reduced by using the image creation software in advance to memorize the image of the image of the specific line. At the same time, it can also be produced by drawing software. When the measurement is performed, the color of the face of each of the measurement tables is described above, and although green is used, the function of allowing the subject to select another color is also available. 1〇 For example, a sample of each color is displayed on the screen in advance, allowing the subject to select the desired color. It is also possible to automatically select a color that has been prepared in advance according to the settings of the computer. The color of each watch can be selected by pre-recording the plural colors, and when you need to use them, you can also use the image creation software, the method of changing the specific 15 colors, or the method of synthesizing by drawing software. In addition, the brightness of the kneading surface of each measurement meter is described above. Although the optimum degree of freedom is set, it also has a function of allowing the subject to select a different brightness. The screen exemption of each table is selected by using the memory for the complex brightness in advance, and it is also necessary to use the image creation software, the method of changing the specific shell degree, or the synthesis by the drawing software. method. In the following, the case where the subject is required to input personal data when receiving the vision measurement service is described. That is, you can enter it every time, or you can use the > library to perform & recall, and then use it when you need it. Because in the case of Gu 35 1289437 发明, the invention shows that the customer's stock of the shellfish has the value of the tester, and accepts the information of the vision measurement service, ί月] the glasses of the person who bought the shell, and the information of the hidden glasses, so they can be combined. These specific characteristics of the examiner are used for vision determination. Thereby it is advantageous to provide the most suitable glasses for the subject. The above-mentioned w has forgotten the vision measurement process with astigmatic myopia patients as the main subject. Because of the use of the vision measuring device, not only can the far distance be obtained, but also the near point distance can be obtained, so the detection of farsightedness or presbyopia can also be performed. When the distance between the far point and the near point is long, there is a possibility of hyperopia or presbyopia 10, and then it is judged whether it is farsightedness or presbyopia based on factors such as the relationship between age and eye accommodation power. Therefore, 'the relationship between age, gender, and eye's accommodation power is used as a parameter, according to the distance and near distance of the input, and the learning function through the neural network (the learning of the accumulated data of the subject with presbyopia or presbyopia) ), can be 15 to calculate the degree of farsightedness or presbyopia. The adjustment of the eye of the subject is measured using a computer screen, and the degree of hyperopia or presbyopia is determined by this. For example, the eye's 20 adjustment power is determined by measuring the ability of the subject to follow the moving picture on the computer, measuring the rapid change in the distance between the subject and the computer screen, and the ability to recognize the eye. In summary, the vision measuring device can not only detect myopic patients with astigmatism, but also check for hyperopia or presbyopia. In addition, the optometry device can not only use the Internet to complete the vision measurement service, but also provide a description of the force measurement service through a specific LAN or WAN. Moreover, the vision measuring device can provide the vision measuring service by using not only the Internet but also the program of the vision measuring device, the computer, and the computer in the optical shop. 5 Since the invention is applicable to a general computer (used widely used), the visual acuity measurement method of the invention can be programmed into a computer program to provide a vision measurement service for the user. This computer program can provide vision measurement services to customers through CD.R0M and other recording media, and allows users to download via the Internet. To provide vision measurement services for users. The possibility of industrial use 'Ding Wei's above-mentioned "Hai invention, the following vision measurement steps are required. 1. Obtain the basic attribute data (age, gender, height, requirements for the secrets of the glasses, etc.) of the subject, 2. Obtain the position data of the measured astigmatism axis selected by the subject (according to the astigmatism displayed on the computer screen) The axis determination table 3 displays the visual acuity measurement table in the direction perpendicular to the upper direction on the pupil surface, the extreme visual target selected by the subject, and the extreme visual distance and basic attribute data obtained from the above-mentioned recording. 5. Calculate the degree of visual acuity according to the distance between the two sides of the 'supplied position' and the distance from the two sides. At the same time, the invention can also be used to detect the vision of a patient with astigmatism. According to the above six, the invention does not require special equipment, and only needs to use an electric picture to provide a vision measurement service for the user, and has the advantages of simple operation and accurate measurement. 37 1289437 玖, invention description [Simplified figure ^ ^ ^ Ming] Figure 1 is a diagram of the configuration of the vision measuring device system in a certain implementation state. Figure 2 is a flow chart of the processing of the inspection device in a certain implementation state. 5 Figure 3 is a side view of the input of personal data. Figure 4 is a cross-sectional view of the glasses when the conditions of use are entered. Fig. 5 is a cross-sectional view showing the astigmatism axis. Fig. 6 is a view showing a screen when the astigmatism axis is measured. • Figure 7 is a cross-sectional view showing the far distance. 10 Figure 8 shows the screen image when measuring the far distance. Fig. 9 is a cross-sectional view showing the near point distance. Figure 10 is a cross-sectional view of the near point distance. Figure 11 is a schematic diagram showing the structure of a neural network when calculating the far distance. Figure 12 is a diagram of a 15 point optometry system in another implementation. Fig. 13 is a schematic diagram of a plurality of visual acuity checklists (small size) ^ · Fig. 14 is a schematic view of a plurality of visual acuity checklists (slightly larger size). Fig. 15 is a schematic diagram of a plurality of visual inspection tables (a larger size). Fig. 16 is a flow chart showing the operation of the vision measuring device in the embodiment. 20 Figure 17 is a schematic diagram of the method and process used to determine vision. Figure 18 is a target symbol that can be used in the determination of vision in the invention. Figure 19 is a schematic view of a C-type ring chart. Figure 20 astigmatism axis visual acuity chart. [Main component representative symbol table of the drawing] 38 1289437 玖, invention description 卜·detector (user) computer 2···Internet 10... Vision server 20...Global Information Network Server (WWWbrowsed)

22---CGI 24...MTML data 30...display face database 3 2...memory field 34,34a,34b,34c ...eyesight checklist image data 40...customer interface device 50...visual force data library 60...calculation Device 70 for distance distance... Device 80 for calculating degree... Vision measurement function unit

39

Claims (1)

1289437 Picking up, applying for patent scope No. 92100116 Application for patent coverage Replacement of this 96.04.10 A vision measuring device that uses a computerized face to perform visual inspection supplements, with: '----------- - The attribute acquisition means of the subject obtains the attribute data of the subject; 5 The astigmatism axis determination table display means displays the astigmatism axis determination table by the face; the orientation acquisition means' sets the astigmatism axis determination table shown above And obtaining the orientation selected by the subject; the first visual acuity measuring and displaying means displays the visual acuity measurement table in the azimuth obtained by 10 on the crotch surface; and the first extremity visual target obtaining means displays the display The i-ray force measurement table obtains the limit visual target selected by the subject; the second visual force measurement table display means displays the visual acuity measurement table on the pupil plane orthogonal to the acquired orientation; the second limit vision The target obtaining means obtains the limit visual target selected by the subject in the second visual force measurement table displayed; and the retreat distance calculating means obtains the obtained The 丨 limit optotype and the acquired second limit optotype and the acquired attribute of the subject, and calculating the distance between the i-th far distance and the second far point 20 as input parameters; and the degree calculation mechanism is from the foregoing The degree is calculated by the obtained orientation and the calculated first far distance and the second far distance. 2. If you apply for a patent range! The visual acuity measuring device according to the present invention, wherein the first visual force measuring force indicator display means and the second visual force reading force display means 40 1289437 are picked up, and the patent application scope of the patent application No. 92100116 is replaced by the original 96.04.10' A majority of the visual acuity checklists composed of the optotype combinations having the phase difference of the target size of 2 or more are sequentially displayed on the display means of the kneading surface display means; the first limit visual target obtaining means and the second extreme visual target obtaining means; ???having a selection mechanism for selecting the minimum visual target for visual inspection displayed on the facet display means, and determining the subject from the selected minimum visual target for each of the visual inspection tables; The decision mechanism of the smallest visual target can be visually recognized. 3. The visual acuity measuring apparatus according to claim 2, wherein the display means for sequentially displaying the majority of the visual acuity checklists on the screen display means is to be included in the visual targets of the visual acuity checklists. Three eyesight checklists with a difference of 3 are displayed on the facet display mechanism. 4. The vision measuring device according to claim 2, wherein the determining means for determining the minimum visual target that is visually recognized by the subject is determined from the minimum visual target selected for each visual acuity checklist. When the minimum value of the phase difference of the optotype selected by the selection mechanism of the minimum visual target selected by the top visual display mechanism is 1 in the first 15 visual display means, it can be determined that the difference in size is 1 In the combined optotype, the minimum optotype is used as the deciding mechanism of the minimum optotype that is recognized by the subject. The invention relates to a vision measuring device according to the third aspect of the patent application, wherein the determining means for determining the minimum visual target that is visually recognized by the subject from the minimum visual target selected for each of the visual acuity checklists is For each of the visual acuity checklists displayed by the above-mentioned kneading display mechanism, the selection of the target segment of the optotype selected by the selection mechanism of the smallest visual target is selected, and the patent application scope of the patent application No. 92100116 is replaced by the patent application. 96.04.10 When the small value is 1, it can be decided that the minimum visual target is the decision mechanism of the minimum visual target that can be recognized by the detected object in the combined visual target with the size difference of 1. 6. The vision measuring device according to claim 2, wherein the determining means for determining the subject's small visual target from the minimum visual target selected for each of the visual acuity checklists is When the minimum value of the phase difference of the optotype selected by the selection mechanism that selects the minimum visual target is 2 for each visual inspection table displayed by the kneading display mechanism, the combination of the size difference of 2 can be determined. In the target, the optotype between the optotypes of the smallest combination is used as the decision mechanism of the minimum optotype that is recognized by the subject. The visual acuity measuring device according to claim 3, wherein the determining means for determining the minimum visual target recognized by the subject from the minimum visual target selected for each of the visual acuity checklists is When the minimum value of the phase difference of the optotype selected by the selection mechanism of the minimum visual target selected by the kneading display mechanism is 2, the combined visual target with the difference of size and phase 2 can be determined. The optotype between the optotypes of the smallest combination is used as a decision mechanism for the visual discriminator to be visually recognized by the subject. 8. The vision measuring apparatus according to claim 2, wherein the determining means for determining the minimum visual target that is visually recognized by the subject from the minimum visual target selected for each of the visual acuity checklists is Each of the visual acuity checklists displayed by the kneading surface display mechanism replaces the most applicable phase of the optotypes selected by the selection mechanism of the visual identity of the smallest visual target, and the patent application scope of the application patent application No. 92100116 When the value of this 96·04.1〇 is 3 or more, the majority of the visual acuity checklist can be displayed again on the kneading surface display means to select the selection means for visually recognizing the minimum visual target. 9. As described in claim 3 The vision measuring device, wherein the determining means for determining the minimum visual target visible to the subject from the minimum visual target selected by each of the visual acuity checklists is 5, and having the visual inspection displayed by the kneading display means In the table, when the minimum value of the phase difference of the target selected by the selection mechanism of the smallest visual target is 3 or more, the majority of the visual acuity checklist can be used. Time displayed on the display means 10 to select the minimum surface day optotype selecting means of visual recognition. 10. The visual acuity measuring device according to the invention of claim 1, wherein the remote point distance calculating mechanism has a use of a plurality of subjects to learn the foregoing The function of calculating the distance of 15 far points by the learning mode of the attribute of the subject and the learning mode of the relationship between the aforementioned extreme visual target and the far distance. The visual acuity measuring device according to claim 10, wherein the near-point distance measuring table display means having a screen display near-point distance measuring table and the near-point distance measuring table displayed on the display are obtained by the subject Enter the near-point distance acquisition mechanism of the near-point distance. The visual acuity measuring apparatus according to claim 10, wherein the astigmatism axis determination table display means has a function of displaying a linear group of four directions composed of a plurality of parallel lines. The visual acuity measuring device according to claim 9, wherein the first visual acuity measuring means display means and the second visual acuity measuring means display 43 1289437, and the patent application scope 92100116 is applied for replacement of the patent application range. At least one of the 96.04.10 organizations has a function of displaying a plurality of linear shading images of the changed line width. The astigmatism measuring device according to claim 10, wherein the astigmatism axis determining table display means and at least one of the first gaze force meter display 5 mechanism and the second tonometry table display means have A screen display information acquisition means for obtaining information on the back side of the computer screen, and a display size changing means for changing the display size of the computer face based on the acquired screen display information. The visual acuity measuring device according to claim 11, wherein at least one of the astigmatism axis determination table display means and the first optometric force measurement table display means and the second optometric force measurement table display means are provided. A display color selection mechanism that selects colors that are not visible to the face of the computer. The visual acuity measuring device according to claim 11, wherein the astigmatism axis determination table display means and at least one of the second visual acuity measurement table display means 15 and the second visual acuity measuring means display means are provided. , has a display brightness selection mechanism that selects the brightness displayed on the computer screen. Π·- A computer-readable recording medium is recorded by a vision measurement program. The vision measurement program is used to perform visual inspection of the subject using a computerized face and includes: 20 (4) Attributes of the tester The process of obtaining the attribute of the subject is to display the astigmatism axis astigmatism axis determination table display step table; the azimuth acquisition step is to display the astigmatism axis determination table 44 1289437, and the patent scope 92100116 The patent application scope replaces this 96 〇 4.1〇 to obtain the orientation selected by the examinee; the first visual force measurement table display step displays the visual acuity measurement table in the obtained orientation on the pupil surface; In the optotype obtaining step, the limit visual target selected by the subject is obtained in the first visual force measurement table displayed; and the second visual force measurement/table display step is displayed on the screen and the acquired orientation Vision measurement table for orthogonal orientation; second limit optotype acquisition step for obtaining a limit view selected by the subject with respect to the displayed second vision measurement table 10. The distance-distance-distance step is to calculate the second-distance distance as the input parameter by using the obtained first limit visual target and the obtained second extreme visual target and the acquired subject attribute as input parameters. And the second far point distance; and the degree calculation step, the degree is calculated from the acquired direction and the distance between the first transport point and the second far point. 18. The recording medium readable by a computer according to claim 17, wherein the first visual force measurement table display step and the second visual force measurement table display step have a phase difference of the visual target size. A majority of the visual acuity checklists composed of two or more optotype combinations are sequentially displayed on the display step of the screen 20 display means; the first extreme optotype obtaining step and the second extreme optotype obtaining step are displayed on the screen display means Each of the vision checklists selects a selection step of visually recognizing the minimum optotype; and determining a minimum optotype that is visually recognized by the subject from the selected visual discriminator for each of the visual acuity checklists. 45 1289437 _ Pickup, Patent Application No. 92100116, Application for Patent Renewal, 96.q4.iq 19· A Vision Server is a vision measurement function for a customer computer connected to a network using a computer screen. : the subject attribute obtaining means acquires the attribute data of the subject; 5 the astigmatism axis determining table display means displays the astigmatism axis determining table in a facet; and the azimuth obtaining means sets the astigmatism axis determining table displayed as described above Obtaining an orientation selected by the subject; the first visual acuity measuring and displaying means displays the visual acuity measurement table in the azimuth obtained by 10 on the crotch surface; and the first extreme visual target obtaining means is the first displayed The visual acuity measurement table selects a limit visual target selected by the subject; the second visual force measurement table display means displays an optical power measurement table on the pupil surface that is orthogonal to the acquired azimuth; 15 second limit view The target acquisition means obtains the limit visual target selected by the subject in the second visual force measurement table displayed; And calculating, as the input parameter, the distance between the second far point and the second far point 20 by using the acquired first limit visual target and the obtained second limit visual target and the acquired subject attribute; and The degree determination mechanism calculates the degree from the obtained position and the first far distance and the second far distance calculated as described above. 20·-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Difficulty 9 fine vision checklist, and visually check the visual acuity chart displayed by the face display mechanism of the customer terminal, and the subject selects the minimum visual target to visually measure the visual acuity, and has an image of the visual acuity checklist The data providing unit is configured to sequentially display a majority of the visual acuity checklist formed by the visual target combination having a phase difference of 5 or less in the visual target size on the customer terminal rear surface display mechanism, and provide the visual acuity check chart image data; The visual target obtaining means, which is individually identifiable, obtains the visually recognized minimum visual target selected by the test subject from the visual acuity checklist displayed on the face display means of the customer terminal; and the visual target determining means Determining the minimum visual target that can be visually recognized by the subject from each of the individually viewable optotypes obtained by the individually identifiable optotype obtaining mechanism21 · A method for measuring the visual acuity' is a visual acuity checklist that displays the visual acuity of the majority of the visual indicators in accordance with the visual acuity. The visual acuity checklist displayed on the screen display means is displayed on the visual display table displayed by the screen display means. The detector selects the minimum visual target that is visually recognized and consciously measures the visual acuity, and has: a step of sequentially displaying the majority of the visual acuity checklists composed of the visual target combinations having the phase difference of the visual target size of 2 or more on the kneading surface display mechanism 20: selecting the visually smallest visual target for each visual acuity chart displayed by the kneading display mechanism; and determining the subject visually identifiable by selecting the individually viewable minimum visual target selected by each of the visual acuity checklists The step of the minimum optotype. 47